# NTSB DEN67F0075: Piper PA-22, N8040C, Boulder, CO, August 13, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 13, 1966
- Place: Boulder, CO · BOULDER, CO
- Location: 40.0244° N, 105.2513° W: Placed by OpenAirDocs: center of Boulder, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0244&lon=-105.2513&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 28, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 121642
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN67F0075
- Page: https://openairdocs.org/ntsb/DEN67F0075

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2417  66/8/13    BOULDER COLO        PIPER PA-22         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 40, 4400
        TIME - 1830                    N8040C              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 30 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - BOULDER MUNI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           OVERSHOOT                                                LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND SPEED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
        REMARKS- BRAKE LININGS WORN EXCESSIVELY.
```

## Aircraft

- Registration: [N8040C](https://openairdocs.org/deregistered/N8040C-2019-01-25), registration cancelled 2019-01-25, S/N 22-2227, built 1954 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22](https://openairdocs.org/model/piper-pa-22) (registry code 7102202) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boulder Muni

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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